What the guidelines askStrong evidence
Adults should aim for at least 150 minutes of moderate activity a week, such as brisk walking, plus strength work on 2 or more days. Minutes count in bouts of any length, and any activity is better than none. The NHS says even a brisk 10-minute daily walk has health benefits, and NHS Better Health says walking briskly for even 1 minute counts as exercise.
This challenge builds from about 55 brisk minutes in week 1 to about 120 in week 4. Our walking plan carries on to 150.
Sources 14, 15, 2, 1, 22
How many steps?Emerging evidence
In large studies, 7,000 steps a day went with a 47% lower risk of death than 2,000, with the biggest gains up to about 5,000 to 7,000 (57 studies). The benefit for death levelled off at about 6,000 to 8,000 a day over 60 and 8,000 to 10,000 under 60, and at about 7,500 in older women. Even reaching 8,000 steps on 1 or 2 days a week went with lower mortality in 3,101 US adults.
These are associations from observational studies: healthier people walk more. No guideline sets a step target, so the challenge builds on your own average instead.
Sources 23, 24, 25, 26, 27
Does pace matter?Mixed evidence
People who said they walked at an average or brisk pace had 20 to 24% lower mortality than slow walkers, in 50,225 British adults. But in studies that measured steps with a device, faster stepping added little once total steps were counted. So the challenge builds steps and brisk minutes first, and adds short faster bouts from week 3 as an extra.
Sources 28, 24, 25, 26
What a month can changeEmerging evidence
Walking programmes of 4 weeks or more raised fitness, lowered blood pressure by about 3.6/1.5 mmHg and took about 1.5 cm off the waist in 32 trials of inactive adults, though most ran longer than a month. Walking groups added about 80 metres to a 6-minute walk across 42 studies, and interval walking, 3 minutes fast and 3 slow, built leg strength and fitness more than steady walking over 5 months in 246 adults averaging 63.
So expect walks to feel easier and your timed route to get quicker; the bigger changes come over months, not weeks.
Sources 29, 30, 31
Walking and weight: the honest numbersStrong evidence
Walking programmes without a diet took off about 0.05 kg a week, so roughly 0.2 kg in a month. Across 116 trials in adults with overweight or obesity, clinically important changes in waist and body fat needed about 150 minutes of aerobic exercise a week or more, and European obesity guidance says to expect no more than 2 to 3 kg on average from exercise alone. Eating a little less does most of the work; see our weight loss plan.
Sources 32, 33, 34
Keeping it goingEmerging evidence
In a UK trial of 1,023 inactive adults aged 45 to 75, a 12-week programme that added 3,000 steps or a 30-minute walk on 5 or more days a week, sent by post or with a nurse, added about 650 steps a day and about 35 minutes a week of moderate activity at 12 months, still about 650 steps at 3 years, and was followed by fewer heart events and fractures over 4 years, though the numbers of events were small.
Simple step counters help: across trials, they added about 1,100 steps a day at up to 4 months and about 460 at a year, and pedometers did at least as well as trackers and apps. Users of the free NHS Active 10 app walked about 9 more brisk minutes a day on the day they downloaded it, which slowly faded but stayed above where they started. Walking with others helps too: Ramblers Wellbeing Walks are free, short led walks across England, starting at 10 minutes.
Sources 35, 36, 37, 38, 39, 40, 41, 42
HillsEmerging evidence
A slope makes a walk harder without walking faster: at the same speed, a 5% slope took about half as much energy again as the flat, and a 10% slope about double, in 16 adults. Walking down steep slopes loads the knees much more than the flat, so take descents slowly.
Sources 43, 44
Add two strength daysStrong evidence
The guidelines also ask for strength work for all the major muscles on at least 2 days a week, which walking doesn't count towards. For bone, walking counts as low-impact exercise: Age UK says it can help prevent osteoporosis, but the Royal Osteoporosis Society and the UK consensus advise strength exercise and, if you have no spinal fractures, moderate impacts too. Our beginner workout plan fits around the walks.
Sources 14, 15, 2, 45, 46, 47
Start elsewhere, or check firstStrong evidence
Most people can start walking without a check: the World Health Organization says a medical check is generally unnecessary before activity no harder than brisk walking for people without a reason to avoid it. The PAR-Q+ (the Physical Activity Readiness Questionnaire for Everyone) is a quick way to see whether that's you. Check first, or start somewhere else, if this applies to you:
- Chest pain, dizziness or fainting when you're active, or a heart condition: see your GP before the faster bouts and hills. With angina, always have your medicine with you, as the NHS advises.
- Legs that ache when you walk and ease after a few minutes' rest: see a GP, as it can be narrowed leg arteries. NICE offers supervised exercise for it: 2 hours a week for 3 months, walking to the point of maximal pain.
- Diabetes treated with insulin or other medicines that can cause a hypo: carry something sugary, and see a GP or diabetes nurse for blisters or cracked skin on your feet. In 41 adults with type 2 diabetes, 10 minutes of walking after each main meal lowered blood sugar after meals more than one 30-minute daily walk.
- You fall or feel unsteady: build strength and balance first with the seniors plan, as the UK osteoporosis consensus advises before brisk walking for frailer older adults.
- ME/CFS (myalgic encephalomyelitis or chronic fatigue syndrome): NICE (the National Institute for Health and Care Excellence) advises against exercise programmes with fixed increases, like this one.
- Pregnancy: walking is recommended. Start gently if you're new to exercise and don't start new vigorous activity, so keep the faster bouts at a talk-but-not-sing pace.
Sources 14, 48, 49, 50, 20, 51, 52, 53, 54, 46, 55, 56
Making it fit your life
Our suggestions for common situations:
- Short on time: split a walk into two or three shorter ones. Bouts of any length count.
- Bad weather: a treadmill, the stairs at home, or our low-impact cardio workout.
- Back pain: keep walking. In a trial of 701 adults, a walking programme built up over 6 months, with education, kept low back pain from coming back for longer (a median of 208 days against 112), though the walkers had more leg and foot problems.
- Sore knees or hips: flatter routes and shorter, more frequent walks, and see our knee and hip arthritis guides.
Sources 15, 57